This is a
list of voids in astronomy. Voids are particularly galaxy-poor regions of space between filaments, making up the large-scale structure of the universe. Some voids are known as supervoids.
In the tables, z is the cosmological redshift, c the speed of light, and h the dimensionless Hubble parameter, which has a value of approximately 0.7 (the Hubble constant H0 = h × 100 km s−1 Mpc−1). Mpc stands for megaparsec.
The co-ordinates (right ascension and declination) and distance given refer to the approximate center of the region.